package com.qs.aop;

/**
 * ClassName: OperLogAspect
 * Package: com.qs.aop
 * Description:
 *
 * @Author: @weixueshi
 * @Create: 2024/1/4 - 23:52
 * @Version: v1.0
 */


import cn.dev33.satoken.stp.StpUtil;
import com.alibaba.fastjson.JSON;
import com.qs.annotation.OperationLog;
import com.qs.mapper.ExceLogMapper;
import com.qs.mapper.OperLogMapper;
import com.qs.mapper.UserMapper;
import com.qs.pojo.entity.ExceLog;
import com.qs.pojo.entity.OperLog;
import com.qs.pojo.entity.User;
import com.qs.utils.IpUtil;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.AfterThrowing;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;

import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;

/**
 * 切面处理类，操作日志 / 异常日志记录处理
 *
 * @author wu
 * @date 2019/03/21
 */
@Aspect
@Component
public class OperLogAspect {

    @Autowired
    private OperLogMapper operLogMapper;

    @Autowired
    private ExceLogMapper exceLogMapper;

    @Autowired
    private UserMapper userMapper;

    /**
     * 设置操作日志切入点 记录操作日志 在注解的位置切入代码
     */
    @Pointcut("@annotation(com.qs.annotation.OperationLog)")
    public void operLogPoinCut() {
    }

    /**
     * 设置操作异常切入点记录异常日志 扫描所有controller包下操作
     */
    @Pointcut("execution(* com.qs.controller..*.*(..))")
    public void operExceptionLogPoinCut() {
    }

    /**
     * 正常返回通知，拦截用户操作日志，连接点正常执行完成后执行， 如果连接点抛出异常，则不会执行
     *
     * @param joinPoint 切入点
     * @param keys      返回结果
     */
    @AfterReturning(value = "operLogPoinCut()", returning = "keys")
    public void saveOperLog(JoinPoint joinPoint, Object keys) {
        // 获取RequestAttributes
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        // 从获取RequestAttributes中获取HttpServletRequest的信息
        HttpServletRequest request = (HttpServletRequest) requestAttributes
                .resolveReference(RequestAttributes.REFERENCE_REQUEST);

        OperLog operlog = new OperLog();
        try {
            // 从切面织入点处通过反射机制获取织入点处的方法
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            // 获取切入点所在的方法
            Method method = signature.getMethod();
            // 获取操作
            OperationLog operationLog = method.getAnnotation(OperationLog.class);
            if (operationLog != null) {
                String operModul = operationLog.operModul();
                String operDesc = operationLog.operDesc();
                operlog.setOperModul(operModul);
                operlog.setOperDesc(operDesc);
            }
            // 获取请求的类名
            String className = joinPoint.getTarget().getClass().getName();
            // 获取请求的方法名
            String methodName = method.getName();
            methodName = className + "." + methodName;
            // 请求方法
            operlog.setOperMethod(methodName);

            // 请求参数
            // 返回结果
            int userId = StpUtil.getLoginIdAsInt();
            User user = userMapper.selectById(userId);
            operlog.setUserId(userId);
            operlog.setUserName(user.getName());
            operlog.setIp(IpUtil.getIpAddr(request));
            operlog.setUrl(request.getRequestURI());
            operLogMapper.insert(operlog);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 异常返回通知，用于拦截异常日志信息 连接点抛出异常后执行
     *
     * @param joinPoint 切入点
     * @param e         异常信息
     */
    @AfterThrowing(pointcut = "operExceptionLogPoinCut()", throwing = "e")
    public void saveExceptionLog(JoinPoint joinPoint, Throwable e) {
        // 获取RequestAttributes
        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
        // 从获取RequestAttributes中获取HttpServletRequest的信息
        HttpServletRequest request = (HttpServletRequest) requestAttributes
                .resolveReference(RequestAttributes.REFERENCE_REQUEST);

        ExceLog excepLog = new ExceLog();
        try {
            // 从切面织入点处通过反射机制获取织入点处的方法
            MethodSignature signature = (MethodSignature) joinPoint.getSignature();
            // 获取切入点所在的方法
            Method method = signature.getMethod();
            // 获取请求的类名
            String className = joinPoint.getTarget().getClass().getName();
            // 获取请求的方法名
            String methodName = method.getName();
            methodName = className + "." + methodName;
            excepLog.setMethod(methodName);
            excepLog.setName(e.getClass().getName());
            excepLog.setMessage(stackTraceToString(e.getClass().getName(), e.getMessage(), e.getStackTrace()));
            //TODO: 存在隐患：如果token过期则不再保存数据
//            int userId = StpUtil.getLoginIdAsInt();
            User user = userMapper.selectById(13);
            excepLog.setUserId(13);
            excepLog.setUserName(user.getName());
            excepLog.setUrl(request.getRequestURI());
            excepLog.setIp(IpUtil.getIpAddr(request));
            exceLogMapper.insert(excepLog);
        } catch (Exception e2) {
            e2.printStackTrace();
        }

    }

    /**
     * 转换request 请求参数
     *
     * @param paramMap request获取的参数数组
     */
    public Map<String, String> converMap(Map<String, String[]> paramMap) {
        Map<String, String> rtnMap = new HashMap<String, String>();
        for (String key : paramMap.keySet()) {
            rtnMap.put(key, paramMap.get(key)[0]);
        }
        return rtnMap;
    }

    /**
     * 转换异常信息为字符串
     *
     * @param exceptionName    异常名称
     * @param exceptionMessage 异常信息
     * @param elements         堆栈信息
     */
    public String stackTraceToString(String exceptionName, String exceptionMessage, StackTraceElement[] elements) {
        StringBuffer strbuff = new StringBuffer();
        for (StackTraceElement stet : elements) {
            strbuff.append(stet + "n");
        }
        String message = exceptionName + ":" + exceptionMessage + "nt" + strbuff.toString();
        return message;
    }

    /**
     * 获取请求参数
     */
    private String parseParam(BufferedReader reader) throws IOException {
        StringBuilder builder = new StringBuilder();
        String line = reader.readLine();
        while(line != null){
            builder.append(line);
            line = reader.readLine();
        }
        reader.close();
        return builder.toString();
    }
}
